CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2014		Dec. 31, 2013
OPERATING REVENUES
Utility	$ 208,727		$ 233,469
Nonutility	615,397		644,936
Total operating revenues	824,124		878,405
OPERATING EXPENSES
Gas Purchases - Utility	84,263		109,488
Gas Purchases - Nonutility	472,971		661,944
Gas Purchases - Related parties	3,264		3,300
Operation and maintenance	44,759		42,023
Regulatory rider expenses	21,463		19,832
Depreciation and amortization	14,386		12,566
Energy and other taxes	14,321		17,028
Total operating expenses	655,427		866,181
OPERATING INCOME	168,697		12,224
Other (expense) income, net	(110)		1,127
Interest expense, net of capitalized interest	7,195		6,295
INCOME BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF AFFILIATES	161,392		7,056
Income tax provision	40,867		1,505
Equity in earnings of affiliates	2,795		2,142
NET INCOME	$ 123,320		$ 7,693
EARNINGS PER COMMON SHARE
BASIC (usd per share)	$ 2.92		$ 0.18
DILUTED (usd per share)	$ 2.88	[1]	$ 0.18	[1]
DIVIDENDS DECLARED PER COMMON SHARE (usd per share)	$ 0.45		$ 0.42
WEIGHTED AVERAGE SHARES OUTSTANDING
BASIC (in shares)	42,276		42,021
DILUTED (in shares)	42,787		42,239

[1] There were no anti-dilutive shares excluded from the calculation of diluted earnings per share for the three months ended December 31, 2014, and 2013.